Table 2.

Results of single logistic regression analysis in the training set.

Variables	EXP (B)	95% CI	P
Age	1.057	1.011–1.106	0.015*
BMI	1.008	0.898–1.133	0.889
Sex	0.993	0.451–2.189	0.987
Surgical side	0.840	0.382–1.846	0.663
Preoperative HKA angle	1.064	1.001–1.130	0.046*
Preoperative HKA angle deviation	0.744	0.664–0.833	0.000*
Operation time	0.986	0.959–1.014	0.317
Preoperative VAS	0.471	0.356–0.625	0.000*
Preoperative fKSS	0.955	0.931–0.980	0.000*
Preoperative ROM	1.049	1.021–1.087	0.000*

*statistically significant difference (P<0.05).

fKSS, functional Knee Society Score; HKA, hip-knee-ankle; ROM, range of motion; VAS, Visual Analogue Score.